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Regeneration of the pancreatic β cell
Massimo Trucco
Massimo Trucco
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Review

Regeneration of the pancreatic β cell

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Abstract

Type 1 diabetes is the result of an autoimmune attack against the insulin-producing β cells of the endocrine pancreas. Current treatment for patients with type 1 diabetes typically involves a rigorous and invasive regimen of testing blood glucose levels many times a day along with subcutaneous injections of recombinant DNA–derived insulin. Islet transplantation, even with its substantially improved outcome in recent years, is still not indicated for pediatric patients. However, in light of the fact that some regenerative capabilities of the endocrine pancreas have been documented and recent research has shown that human ES cell lines can be derived in vitro, this review discusses whether it is practical or even possible to combine these lines of research to more effectively treat young diabetic patients.

Authors

Massimo Trucco

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Figure 3

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Using a GFP-transgenic mouse as donor, it is possible to observe how the...
Using a GFP-transgenic mouse as donor, it is possible to observe how the majority of the transplanted bone marrow cells do not directly participate in the regeneration of the endogenous pancreas. As shown here, there are no double-positive (orange) cells in the newly formed islets. The donor cells (green) appear to be located close to possibly existing juxta-ductal precursor cells, which may be activated by bone marrow cell–secreted factors. Insulin-positive cells are red. Magnification, ×400. See also refs. 32 and 33.

Copyright © 2026 American Society for Clinical Investigation
ISSN: 0021-9738 (print), 1558-8238 (online)

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